太赫兹科学与电子信息学报2025，Vol.23Issue(6)：610-614,5.DOI:10.11805/TKYDA2023347
时间反转雷电辐射源定位的加速实现
Accelerated implementation of locating lightning radiation sources based on time reversal technique
摘要
Abstract
To address the issue of high computational load and long processing time in the imaging calculation process of lightning radiation sources using time-reversal algorithms in the frequency domain,a series of optimized acceleration methods for time-reversal algorithms are proposed.Firstly,the introduction of Graphics Processing Unit(GPU)parallel computing is further expanded to dual-GPU cluster computing,while adopting multi-threading concurrent programming methods of Central Processing Unit(CPU)and GPU to cover the time consumption caused by mutual waiting;secondly,the maximum energy search algorithm and phase difference filtering algorithm and other programs are written to the GPU to achieve parallel search and calculation of phase difference values;finally,the data acquisition and transmission module,GPU processing module,and positioning imaging module are integrated to achieve the integrated function from data collection to positioning imaging of lightning data.For a 500 ms segment of Very High Frequency(VHF)lightning data,the actual measurement only takes 18 minutes,which is about 703 times faster than the previous CPU single-line processing process,and the number of effective positioning points is only reduced by 9.3%.关键词
雷电定位/时间反转/快速算法/GPU并行Key words
lightning localization/time reversal technique/fast algorithm/GPU parallel分类
信息技术与安全科学引用本文复制引用
杜双江,石立华,邱实,李云,赵迎诚..时间反转雷电辐射源定位的加速实现[J].太赫兹科学与电子信息学报,2025,23(6):610-614,5.基金项目
国家自然科学基金资助项目(51977219 （）
42105077) （）
